# Assign Master and ML both roles to same node? **URL:** \ **Category:** Elasticsearch\ **Created:** [April 13, 2021, 4:37pm UTC](https://discuss.elastic.co/t/assign-master-and-ml-both-roles-to-same-node/270041 "2021-04-13T16:37:41Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![bharat1](https://avatars.discourse-cdn.com/v4/letter/b/49beb7/32.png) [@bharat1](https://discuss.elastic.co/u/bharat1)\ **Post date:** [April 13, 2021, 4:37pm UTC](https://discuss.elastic.co/t/assign-master-and-ml-both-roles-to-same-node/270041/1 "2021-04-13T16:37:41Z")
Hi Team, We plan to use Platinum license 1. Can I assign ML and Master both roles on single/same node? 2. From license count perspective, if I use 3 master and 3 ML both roles assigned to those 3 master nodes, will that be considered as 3 License count or 6 License count? 3. How much RAM as a standard should I assign for JVM for master to run smoothly and for ML I plan to assign 64 GB RAM with 16 cores per node for above 3 nodes. The reason I am trying to assign both roles to same node is to save on cost because just for Master (8 or 10 GB RAM) I need to spend entire 1 license cost hence want to share that cost with other licensed role. Below 6 license are considered separately: I do plan for HOT (3 nodes) & WARM (3 nodes) again with all 64 GB RAM + 12 core Appreciate your thoughts on this ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [April 13, 2021, 10:40pm UTC](https://discuss.elastic.co/t/assign-master-and-ml-both-roles-to-same-node/270041/2 "2021-04-13T22:40:12Z")
Can you please edit your post to remove the formatting, it makes your questions really hard to read. ---
**Author:** ![bharat1](https://avatars.discourse-cdn.com/v4/letter/b/49beb7/32.png) [@bharat1](https://discuss.elastic.co/u/bharat1)\ **Post date:** [April 14, 2021, 5:03am UTC](https://discuss.elastic.co/t/assign-master-and-ml-both-roles-to-same-node/270041/3 "2021-04-14T05:03:22Z")
@warkolm yes done. ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [April 14, 2021, 8:10am UTC](https://discuss.elastic.co/t/assign-master-and-ml-both-roles-to-same-node/270041/4 "2021-04-14T08:10:13Z")
1. Yes. Make all 3 nodes master eligible + ML 2. it's 2 instances of Elasticsearch, so 3 licenses 3. That depends ---
**Author:** ![bharat1](https://avatars.discourse-cdn.com/v4/letter/b/49beb7/32.png) [@bharat1](https://discuss.elastic.co/u/bharat1)\ **Post date:** [April 14, 2021, 8:32am UTC](https://discuss.elastic.co/t/assign-master-and-ml-both-roles-to-same-node/270041/5 "2021-04-14T08:32:02Z")
> [@warkolm](#): > > it's 2 instances of Elasticsearch, so 3 licenses ok thanks, I did not understood your statement about "its 2 instances" part. There will be actually 3 nodes having dual roles of Master + ML on all 3 nodes. ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [April 14, 2021, 8:32am UTC](https://discuss.elastic.co/t/assign-master-and-ml-both-roles-to-same-node/270041/6 "2021-04-14T08:32:40Z")
That's a typo, I meant 3 instances, so 3 licenses. ---
**Author:** ![bharat1](https://avatars.discourse-cdn.com/v4/letter/b/49beb7/32.png) [@bharat1](https://discuss.elastic.co/u/bharat1)\ **Post date:** [April 14, 2021, 8:36am UTC](https://discuss.elastic.co/t/assign-master-and-ml-both-roles-to-same-node/270041/7 "2021-04-14T08:36:40Z")
ok thanks. Its not only elasticsearch but those nodes will also work as ML job processing server. So even if Master (Elasticsearch) & ML server role hosted on same server will be considered as single license you mean? In such dual role, how should we plan for allocation of available RAM for both roles? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 12, 2021, 8:37am UTC](https://discuss.elastic.co/t/assign-master-and-ml-both-roles-to-same-node/270041/8 "2021-05-12T08:37:12Z")
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